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190978 (2001 XD101)
Classification: Main-belt Asteroid          SPK-ID: 2190978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283529213647873 4.0736e-08  
a 2.346381350201622 1.1899e-08 au
q 2.045216449267389 9.4574e-08 au
i 6.937203138378784 5.2165e-06 deg
node 297.0031492991058 3.7126e-05 deg
peri 100.1801174386377 4.2783e-05 deg
M 146.3045208477653 2.1731e-05 deg
tp 2458666.978937433199
(2019-Jul-02.47893743)
7.7965e-05 TDB
period 1312.793216580784
3.59
9.9865e-06
2.734e-08
d
yr
n .2742244516905964 2.086e-09 deg/d
Q 2.647546251135854 1.3427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      7041 days (19.28 yr)  
   first obs. used      2001-10-15  
   last obs. used      2021-01-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51411  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:09:53  

Additional Information
 Earth MOID = 1.06517 au 
 Jupiter MOID = 2.75184 au 
 T_jup = 3.540 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456985.5 (2014-Nov-24.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127900039802836 4.0782e-08  
q 2.046716336680741 9.4706e-08 au
tp 2457351.500178794454
(2015-Nov-25.00017879)
7.598e-05 TDB
node 297.1405499620681 3.7123e-05 deg
peri 99.53540678380899 4.2824e-05 deg
i 6.936655885409273 5.2172e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      7041 days (19.28 yr)  
   first obs. used      2001-10-15  
   last obs. used      2021-01-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51411  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:09:53  

Additional Information
 Jupiter MOID = 2.75184 au 
 T_jup = 3.540 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.663179570729328E-15 -3.839639499261973E-15 -3.223702454749978E-13 -4.117202518656722E-15 -1.311619938517736E-13 -2.478717283321903E-15
q -3.839639499261973E-15 8.969191639146756E-15 9.029521239334192E-13 1.0136050147275E-14 3.357090486018381E-13 5.75781898680251E-15
tp -3.223702454749978E-13 9.029521239334192E-13 5.772974230145028E-9 -1.699070022590814E-12 1.633954317667787E-9 7.981424601381974E-13
node -4.117202518656722E-15 1.0136050147275E-14 -1.699070022590814E-12 1.378103209784815E-9 -1.367969777497753E-9 2.655222055319843E-11
peri -1.311619938517736E-13 3.357090486018381E-13 1.633954317667787E-9 -1.367969777497753E-9 1.83390799393798E-9 -2.608281900342075E-11
i -2.478717283321903E-15 5.75781898680251E-15 7.981424601381974E-13 2.655222055319843E-11 -2.608281900342075E-11 2.72188526393781E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.79   n/a E2021B55  
rotation period rot_per 12.30 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]

190978 (2001 XD101)          Discovered 2001-Dec-10 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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